Mining or in situ disintegration of hard material – In situ conversion of solid to fluid – Input and output wells
Patent
1979-02-09
1980-11-11
Pate, III, William F.
Mining or in situ disintegration of hard material
In situ conversion of solid to fluid
Input and output wells
299 5, E21C 4108
Patent
active
042329027
ABSTRACT:
Subterranean formations of water soluble salt deposits are solution mined by introducing into the formation an aqueous solvent having a temperature substantially above the temperature of the deposit thereby heating the deposit and dissolving the soluble salts, and withdrawing from the deposit an aqueous solution enriched in the dissolved salts. An aqueous solvent having a temperature lower than the temperature of the first solvent is subsequently introduced into the deposit thereby recapturing heat given up to the deposit and dissolving the soluble salt utilizing greater solubility characteristics of the soluble salts owing to the increased deposit temperature, and withdrawing from the deposit a substantially increased amount of dissolved salt.
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patent: 3284137 (1966-11-01), Wolber
patent: 3294167 (1966-12-01), Vogel
patent: 3348883 (1967-10-01), Jacoby
patent: 4074754 (1978-02-01), Christian
Benjamin Walter M.
Pate III William F.
PPG Industries Inc.
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